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TAC Research Bulletin

The TAC Research Bulletin highlights recently-published reports and articles from around the world with relevance to road transportation in Canada. Full text links are included, so you get more than just the abstract.

E.g., 07/08/2020
E.g., 07/08/2020
Monday, May 4, 2020 - 14:00
Typical maintenance activities by the Virginia Department of Transportation (VDOT) for existing asphalt pavements involving a periodic placement of a 1.5-in to 2-in layer of asphalt concrete are becoming increasingly costly.  When applied at the right time, pavement preservation treatments can restore a smooth, safe driving surface while saving money on...
Monday, May 4, 2020 - 14:00
These recordings present highlights and findings of the NCHRP Domestic Scan 16-02 on Landscape Design Practices for Roadside Water Management. This scan investigated how transportation agencies are applying principles and practices of green infrastructure (GI) for roadside water management to mitigate adverse impacts of flooding, drought, and temperature...
Monday, May 4, 2020 - 14:00
One of the first Geosynthetic Reinforced Soil—Integrated Bridge System (GRS-IBS) projects to be instrumented and evaluated under the Federal Highway Administration's (FHWA's) Every Day Counts program was a replacement bridge along County Road 47 over Trout Brook in the town of Stockholm within St. Lawrence County, NY. This GRS-IBS is aligned on a...
Monday, May 4, 2020 - 14:00
This document describes Hill Descent Monitoring (HDM) schemes associated with the Telematics Monitoring Application (TMA). An HDM scheme is administered by an appropriate road authority or regulator (‘Authority’). Hill Descent Monitoring schemes provide Authorities with a way to manage sections of road with hazardous grades and road alignments...
Monday, May 4, 2020 - 13:45
Five different business models for mobile fare payment apps are examined, as the world of apps used by transit agencies in the United States and Canada continues to steadily grow. The TRB Transit Cooperative Research Program's TCRP Synthesis 148: Business Models for Mobile Fare Apps documents current practices and experiences of transit agencies that...
Monday, May 4, 2020 - 13:45
Cyclists and noncyclists have a wide range of perceptions of on-street bicycling facility designs — including sharrows, bike lanes, and buffered bike lanes — along a variety of roadway types, with and without curbside automobile parking. The TRB National Cooperative Highway Research Program's NCHRP Research Report 941: Bicyclist Facility...
Monday, May 4, 2020 - 13:45
Spectroscopy, which is a study of interactions between matter and electromagnetic radiation that has been around for decades, provides a way of analyzing materials. Its methods can tell us exactly what a material contains and can produce unequivocal results that make it possible for highway agency personnel to quickly determine whether a material is or is not...
Monday, April 27, 2020 - 13:45
Pedestrians’ acceptance of automated vehicles (AVs) depends on their trust in the AVs. We developed a model to promote pedestrians’ trust in AVs through implicit communications. To empirically verify this model, we conducted a human subject study with 30 participants in a virtual reality environment. The study manipulated two factors: AV driving...
Monday, April 27, 2020 - 13:45
This project established protocols to help evaluate the utilization of chemical stabilization methods to potentially improve the engineering behavior of problematic soils with and without soluble sulfates within the state of Montana. In addition, construction life cycle cost analyses were used to compare existing approaches used by MDT versus chemical...
Monday, April 27, 2020 - 13:30
The glossary was published for the first time in 1994 with the purpose of assisting member countries during the collection of data on transport using the Common Questionnaire developed by the UNECE, the International Transport Forum and Eurostat. It has since evolved to cover all areas of transport statistics. The present fifth edition is the result of...
Monday, April 27, 2020 - 13:30
The first edition of this report, in 2009, provided a comprehensive industry reference for the management of airport deicing runoff. The second edition has been wholly updated to reflect the latest industry practices. The TRB Airport Cooperative Research Program's ACRP Research Report 14: Deicing Planning Guidelines and Practices for Stormwater...
Monday, April 27, 2020 - 13:30
This report analyses the potential and the prerequisites for reaching the National Transport Plans targets of only selling zero-emission passenger cars, small light commercial vehicles (Vans) and city buses in 2025, large vans in 2030 and that 50% of new trucks and 75% of new long distance buses shall be zero-emission by 2030. The passenger car target for 2025...

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